Alunite and Diopside Physical Properties

Alunite

Diopside

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.93.22-3.40

1 7.18

1.5 Fracture

Conchoidal, Uneven

Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal

1.6 Cleavage

On {0001}, perfect

Distinct/good on {110}

1.7 Mohs Hardness

3.5-45-6

2 10

1.8 Chemical Composition

KAl3(SO4)2(OH)6

CaMgSi₂O₆

Alunite and Diopside Chemical Formula

While comparing Alunite and Diopside physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Alunite and Diopside chemical formula.

Chemical formula of Alunite- KAl3(SO4)2(OH)6
Chemical formula of Diopside- CaMgSi₂O₆

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Alunite and Diopside Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alunite and Diopside Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite and Diopside Optical Properties during the identification of gemstone. Specific gravity of Alunite is 3.22-3.40 whereas that of Diopside is 3.22-3.40.